Movement of animals is dependent on skeletal muscle.The ability of muscle to contract is dependent on the structural organization of muscle fibers.
a. What is the fundamental contractile unit of skeletal muscle,which is composed of bands,lines,and a zone?
b. What are the letters that describe the bands,lines,and the zone?
c. What do these letters represent?
d. During contraction,the length of the muscle shortens due to changes within the contractile unit.What are the changes that take place with respect to the bands,lines,and the zone?

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The Answer of Movement of animals is dependent on skeletal muscle.The ability of muscle to contract is dependent on the structural organization of muscle fibers.
a. What is the fundamental contractile unit of skeletal muscle,which is composed of bands,lines,and a zone?
b. What are the letters that describe the bands,lines,and the zone?
c. What do these letters represent?
d. During contraction,the length of the muscle shortens due to changes within the contractile unit.What are the changes that take place with respect to the bands,lines,and the zone?

Movement of Animals Is Dependent on Skeletal Muscle